Find the Number of Moles of Air in Your Classroom! Determine the number of moles of air in your classroom using a meter stick, a thermometer, and the current atmospheric pressure. Once you have done this, determine the number of grams of gas that are in your classroom (the average molar mass of air is approximately 29 g/mol). During this activity, make sure that you use all of the correct conversion factors and the correct value of the ideal gas constant. Show your measurements and calculations in the space below. For simplicity’s sake, assume that there are no solid objects within the room that take up space. Good luck! (c) 2012 Ian Guch, All Rights Reserved www.chemfiesta.com